"A new wave could be triggered from the drug addicts brought to Kandakadu from Suduwella. Proper measures are needed to control such clusters. Sometimes PCR test results could be negative at first and a re-test could result as positive. Therefore the best super weapon is 'quarantine'. Health workers, tri forces and the police are taking every possible measure to prevent a disaster. It cannot be stated yet that the Covid-19 threat has passed. Adhering to health regulations, quarantining and controlling clusters must be done. For this, everyone needs to cooperate," Dr. Jasinghe adds.